samsung e710 unlock code

ANDREW-PARKER_2

hello to all fellow members im wondering is there a simple unlock code for samsung e710 i have the long code as below but wont work on all e710s cant get my head round it works on some then not on others any help would be great in this matter thanks in advance and have a nice day

this is the code i have

1. Type *#06# on your phone and write down your IMEI (you'll need it
later) or get it from the back of your phone.
2. Put a simcard from another provider and power on your phone
3. At the "wrong card" message type: *2767*688YOURIMEI, for
example: *2767*68835363900065487#
(imei is 14 digits ignore the 3 digits after the slash "/")
4. Your phone will reboot and then your simcard from other provider will
work

****this 4 steps is for a temporary unlocking, when you power off your
phone
it'll be locked again, to permanently unlock it continue to step 5****

5. After your phone has rebooted on step 4, dont press any key or do
anything,
just type this: *0141# and hit the send button (green button)
6. A message will appear telling you that your phone is personalized
7. Shut off the phone and enter the SIM of yet another carrier.
8. At the "Enter SIM lock password" screen, enter eight zeros as in
00000000.
9. YOUR PHONE IS NOW UNLOCKED

not sure if anything wrong but like i said works on some not on others

thanks for taking time to read